J Korean Acad Nurs.  2017 Jun;47(3):357-366. 10.4040/jkan.2017.47.3.357.

Multiple Factors in the Second Trimester of Pregnancy on Preterm Labor Symptoms and Preterm Birth

• Kim JI
• Cho MO
• Choi GY

• KMID: 2426465
• DOI: http://doi.org/10.4040/jkan.2017.47.3.357

Abstract

PURPOSE
The aim of this study was to determine the influence of various factors on preterm labor symptoms (PLS) and preterm birth (PB).
METHODS
This prospective cohort study included 193 women in the second stage of pregnancy. Multiple characteristics including body mass index (BMI), smoking, and pregnancy complications were collected through a self-report questionnaire. Pregnancy stress and PLS were each measured with a related scale. Cervical length and birth outcome were evaluated from medical charts. Multiple regression was used to predict PLS and logistic regression was used to predict PB.
RESULTS
Multiple regression showed smoking experience, pregnancy complications and pregnancy specific stress were predictors of PLS and accounted for 19.2% of the total variation. Logistic regression showed predictors of PB to be twins (OR=13.68, CI=3.72~50.33, p<.001), shorter cervix (<25mm) (OR=5.63, CI=1.29~24.54, p<.05), BMI >25 (kg/m²) (OR=3.50, CI=1.35~9.04, p<.01) and a previous PB (OR=4.15, CI=1.07~16.03, p<.05).
CONCLUSION
The results of this study show that the multiple factors affect stage II pregnant women can result in PLS or PB. And preterm labor may predict PB. These findings highlight differences in predicting variables for pretrm labor and for PB. Future research is needed to develop a screening tool to predict the risk of preterm birth in pregnant women.

Keyword

Pregnancy; Preterm labor; Preterm birth; Stress; Cervical length measurement

MeSH Terms

Adult
Body Mass Index
Cervix Uteri/physiology
Female
Humans
Logistic Models
Obstetric Labor, Premature/*pathology/psychology
Odds Ratio
Pregnancy
Pregnancy Complications
Pregnancy Trimester, Second
Premature Birth/*pathology/psychology
Smoking
Stress, Psychological
Surveys and Questionnaires
Young Adult

Figure

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  Figure 1. Supplementary analysis after birth.

Reference

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